TFT may well sort your DT forks….but just call them and ask their opinion of Twin Shot – if you get a diplomatic technician you’ll get a ‘hmmmmmmmmmm’, if you get an honest one you’ll get ‘AVOID’!!!!
The problem with Twin Shot is the design of the damper – the damper works the same as a rear shock in that an IFP is used, but more often than not air (which is used in the IFP chamber) leaks via the damper control pins/dials, most commonly when you turn the rebound dial. So you are left with a fork with all the damping screwed up – now imagine you are out on the trail, make an adjustment and you lose air/damping!
I’m sure there are many DT Twin Shot forks out there without issue, but having gone through 7 cartidges (yes – SEVEN!) I would avoid them like the plague. And it seems I’m not alone. Add to the above you can not work on TwinShot (or SingleShot) dampers yourself.