tunnel extensions

[05sum800]

hey there, i'm changing my track from a 144 to a 151 on a 800 summit and just wondering if i need to extend my tunnel

 

[Summiteer]

I don't beleive that you do, only 3.5 or so inches longer.

 

[sledneck48]

Shouldn't have to i extended mine from 136 to 151 and only had to add about five inches

 

[koko3052]

Stretched my Gade from 136" to 151". Just moved the bumper back 1 hole.