FS Random TRX450R / Warrior parts

Hello I’m new here and was wondering is anyone knew of good replacement part numbers for front struts and rear shocks for this atv? I think I’ve found a new rear shock, that looks like the original but there is no dimensions or anything and was wondering if there are any afterMarket new front struts available. I know it’s a long shot but any help would be appreciated. 

Hello everyone, I just picked up an 02 LT-F250F the other day and have been in the process of tearing it down to fix some stuff- one of which was the cylinder base gasket leaking like a sieve. Well, I know why that is now, and I also discovered that someone had been in there before. I didn't take pictures, but it looks like it was probably run low on oil at some point, the cam journals and the "bearings" (for lack of a better term) in the head and the valve cover are totally wiped out, very deep grooves.  From what I know it's very difficult to repair aluminum in this way, so I'm trying to figure out where to go next.
 
1. Have someone grind down the head and valve cover and fit actual bearings in since the aluminum is screwed, and have the cam ground down to match.  I have no idea what this would cost.
2. Buy a replacement head+cam+valve cover.
 
#1 I was hoping someone might have some advice on, but #2 seems like it'll (probably) be the more cost effective option.  However I'm running into some difficulty, it seems like the 2001 and 2002 models specifically use a different head part number,  11100-19B10, instead of  11100-19B01 like for all earlier models.  What exactly is the difference between them? There are obviously far more of the earlier heads because it ran for over 10 years.  Are they actually interchangeable? I've also noticed there are heads from the LT250EF that has 4 valve heads but also otherwise look identical.  Would those work as well possibly?  I'd like to not have to drop $500 on machine work or new heads on a $1300 quad that I'm already putting a bunch of new parts on.  Oh, and it has a new piston and the cylinder itself looks pretty good too, as I said someone was in here before me.
 
Any help or advice would be greatly appreciated. I'll post pics of the carnage tomorrow.
   
 

Bucking started about a month ago and works ok after 1/2 hour warmup.  Today while working on it i discovered that if i put the ignition switch in LIGHT position it runs fine right from the start.
I'm stumped!  Any idea why this could be?  

If you had to choose one mod that you couldn't live without, or had to recommend one what would it be? 

Hi everyone,
Outlander 2006 400 XT i have replace the startor cover and right after i did that the oil light is on and not turn off, i check the wires and checked the oil level, everything seem to be normal quad is starting without any problem and rev just fine. i did not want to ride it since im not sure if it is faulty sensor or not so just be safe i did not let it run more the a minute or so. 
I have read in the owner manual that i need to clean the oil strainer every 200hr unfortunately i never did that, my service manual that i have does not even indicate of such a thing. so i did some search around and it seem like canam split the manual into 3 parts
owner manual
service manual
engine manual
I have the first 2 but i can not find the last one, part number 219100232. If someone can guide me where do i find the oil strainer so i can clean it i will appreciate it.   im going to do an oil pressure test tomorrow to check how many PSI i have, just to make sure.
Thanks