I thought the 200M and 200S had the decomp lever in the head....?? Not my models though so it's a guess. I'd look at parts on EBAY or start a new thread on the decompression lever......
On a side note, I had an 85R with slipping gears. Back then, I was broke and 125$ in parts was allot! I was very disappointed when I got the new gears because they too did not have the sharpness I felt they would being new.
But, for whatever reason, they did fix the issue. I just thought I'd see teeth as sharp as knives!!
I think allot of that <85 200X issue is the spring itself. But, don't go overboard. A strong engagement spring will also bump off those good edges on the gears as it slips back on by on the upstroke.
Problem is, that all your stuff is internal and tough to get at.
DADS did claim to have figured out what shim he felt worked well. I'd PM him and see if the ones that got modded are still working well.
And if that spring alone can be bought new, I'd grab one up!
Good luck
: Thats one of Honda's worst designs..........
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country