I say do it yourself, including splitting the cases...
I WHOLEHEARTILY agree.
The first (and only) time I split the cases I imagined a butt-load of transmission gears falling out on the floor. I took the bottom end (1982 YZ250 2 stroke) to a shop and had the mechanic look at it. I had tranny damage. He pointed out some gears he recommended me replacing, which I did. I WAS NOT charged for his 5 minute observation.
To split the case, I WOULD recommend a case splitter though. A homemade one would work...and is what I did use.
Doing your own work instills both pride and confidence in yourself. I have read enough horror stories here on TT about ignorant shop mechanics and outrageous service work bills.
:cool:Doing all your own work is an absolute WIN-WIN Situation!!!