savage gearbox problem please help!!!

[peter]

i have fitted a 3 speed gear box into my savage x it run ok until i fitted the reverse mod into the gear box and now the gearbox is stiff i carnt pop wheelies anymore and it drinks the fuel like a monster with it in this current state can anybody help me?:\

 

[notverrysmart]

the reverse moduale probably isnt fully engaged in drive, so most your power is getting lost to gears slipping. hopefully not eating eachother.
or possibly something else is loose from when you installed it.
forgot to say, check your drive cups, the set screw may have fallen out

 

[richierich]

make sure the silver arm on the reverse goes all the way in and out you might have to adjust your reverse servo