In almost twenty ,years the only major mod was from Jarms to Aarms ,so no I dont see any new changes.Yamaha makes them then leaves it up to us to take it to the next lelvel and boy do we take it to the NEXT LEVEL......
Yes, there is a difference, do you want to advance your timming +3 or +4?
Your better off getting an adjustible timing plate ricky stator has them for$35.00 and you can advance or retard +10 or -10 then that way you can get it write...
Have your sister in law get a Power of attorney ,that should make that shee all yours, she is his wife, has his last name ,he went to jail, she sold the bike ,you paid it off,you sign the title, its a rap...