like someone already said check your exhaust first and if u cant diagnose crack open dat tranny!!!! if one of your bearings is bad replace them all and dont go thru the drama of having to open it every other week to replace bearings my moms 98 hx lost about 3 to four balls out of one of her bearings, of course check all your gears and syncros, resurface your flywheel!!!!! (a non-resurfaced flywheel will not be flat(of course) and will wear out your brand new beautiful clutch in no time) ummmmmmmm o yea check your trans axles because they are apart of you transmission too and i have a question for you... does your steering wheel vibrate? any ? send me a message and i will respond asap...

peace and love...
Notorious P.