Replacing The CVT Belt

Hey I have a 1997 big bear 350 4x4
I replaced the shifter shaft and the shift arm linkage and the rod when I installed them all I was unaware that you had to line the dot on the shifter shaft with the gap on the linkage arm gap put it all back  together and rode it I can't get it to shift in the right gears  I can move the shift cam by hand and goes in different gears but with the shifter shaft in it riding I can't put it in R or N 
Anyone know how to line up the shifter shaft and the shift cam s
 

I did a compression test on my 2005 Bombardier Traxter 650 CVT and it's 75 PSI.  service manual only talks about leak down test.  No specification for engine compression the manual.  What does 75 PSI tell me?  Thank in advance.
 
A little history of this machine.  640 miles.  Picked it up about 2 years ago, not running. Probably the computer.  Tested all circuits and confirm it was the computer.  Long story short, I watched a Youtube video and fixed the computer. ATV now started and runs.  BUT, it tops out 20 MPH.  I cleaned the carb 3 times also using a Mikuni carb kit after the second time.  Slide in carb is going up and down.  Only adjustment for fuel is at 1.5 turns out.  NGK Sparkplug had soot on main part but brown on the electrode.  Champion sparkplug is brown.  I check CVT clutches and they both appear to engage like they suppose to.  Checked valve clearance it's 0.00, I can't get any feeler gauges in-between.  I check timing chain I believe it's in the correct position and hasn't skipped.  I removed muffler plug and drilled into muffler to try and make sure it wasn't plugged.

If so, I have covid lol, in the past 3 months I have bought 6.
04 Suzuki Quad runner 400
86 Kawasaki bayou 185
96 Polaris magnum 425
95 Polaris trail blazer 250
03 bombardier 175 rally
92 Yamaha moto 4 350 

What are your riding location preferences? Mud Park? Personal Trails? Public Land?

I'm having trouble identifying Mark. I know where the mark is in the Stator cover. Is the T at about, the 12 o'clock position in this photo? I've got to buy another Stator cover as the one I have has a hole at the bottom of it. Due to failing eyes, I have a lot of trouble anymore. Thanks! 🙂