The easier you make it on the crank ... the better it will last.
Make sure the primary clutch is balanced well and that all the bushings are in excellent shape.... Also, the belt side clearance is critical that it gets set up correctly. This is not something you can do at home unless you have some expensive shop tools.
How old is the belt. If more than 1000... Replace it regardless.
Set the belt deflection to factory specs and make sure the engine is aligned EXACTLY correct.
Run good quality oil.
I send my clutches off to IndyDan for full service rebuilds rather than just a balance job if they are at all higher mileage.
Good luck.
Just some background info to help fill in the gaps...
I bought the sled spring of 07 with roughly 1800 miles on it... has about 2400 miles now.
PO had an SLP single and clutching on it, but took it off and swapped his buddy for stock parts when he decided to sell it.
I have the SLP torque arm and push stop but still running stock motor mounts.
Engine is (or at least was last time I checked) perfectly aligned.
I did blow a belt last season... it was on the trail but I had the hammer down.
I have the primary off right now and I need to read up again on how to check it over to see what needs replaced... Indy Dan told me I'd be better off to **** can my primary and just buy a new one.