Uhhhhhhh think thats a sm420 isnt it..??? uhhhhhhh thats typical of those xmissions... and sycronizer wont fix it... the 1st second shift collar and second gear on main shaft need replaced...and theyrer dang hard to find... i looked last month,,and did finally find them at someplace in PA...but they wanted 180 bucks for the collar,,,and 190 for second gear... If ya can find a used one that works...might be cheaper...ive got three here that i dont know if theyre any good but the guy wants 250 for them... ive got two used ones...LOL..thats jump outta second...hehehe soooooo if we can find someone that its jumpin outta Hi...then we can fixem up.... course it could be a bent fork...or rail... or detent on rail gone...but i really doubt it... its hard to see too...but if ya pull the top off...ya can see second gear...and if there is any taper then they will jump out....sorry.....
