RE: Welcome to Club SAITO !
to keep it simple i would use washers or small spacer that lowes sells to move your mount forward, just like he stated, as far as your muffler coming loose i very rarely have had a saito muffler come loose, in fact i can only think of 2 times, what i did to fix it was i drilled a small 1/16th hole right where the two mufflers go together and installed a 1/16th aluminum rivet and that seemed to keep it on there permanently