38mm/1.5" gap (at least for the Sniper). If you want to make certain that you have enough slack, you can let the air out of the rear shock and fully compress the rear suspension to see if your line(s) are under tension.
My Sniper and Carbine both have carbon guide tubes inside the frame and chainstays, so I'm guessing your Primer should also have them. They will definitely speed up your build and keep the rattling to a minimum.
My Sniper and Carbine both have carbon guide tubes inside the frame and chainstays, so I'm guessing your Primer should also have them. They will definitely speed up your build and keep the rattling to a minimum.