[beale]

Xray are very strong but not if the corners are regularly knocked, I have run Xray's for 5 years now and the list of broken parts is minimal however it is the same corner at the same track that has cost me front 3 steering knuckles, each time it happens though all the other components are subjected to the same impact and thus I have ended up replacing driveshafts, bearings and wishbones eventually.
This pulling to 1 side will be exaggerated by a motor that is too powerful/punchy or geared too low, I still think this is a simple to find problem, check-
Rear belt is almost loose front is almost tight,
Remove pinion does everything roll turn freely?
Remove shocks do all wishbones lift and fall under their own weight?
Are all shocks built to same length? (Replace orings and bladders) fill with oil and set rebound to 0 or at least all the same
Check droop, with car on a flat surface with all electrics in race ready, lift front of car in the middle with a driver slowly to see that both front wheels leave the surface at the same time if not adjust the droop screws till they do (aim for 2mm lift before both tyres leave the surface (do same at rear)
What diffs are you using? Oil filled 2k is good, ball diffs need to be smooth rear wheels should almost spin but with no slip
Do they have spools up front?
Check toe shims are the same for each side at the rear you should have 3 deg rear toe in, 1 deg front toe out (without setup gauges to check the front I find if you switch on so the servo centres look from behind the rear wheels to the front you should just see the front of the front wheel proving you have toe out if you only see tyre you have a toe in to neutral setting)