the CTW uses the same trigger as the 2007 PTW model.
this version (CTW/>2007) has a longer trigger, which means a shorter microswitch on the ECU.
the newer PTWs (2008 ) have a longer microswitch and a shorter trigger.
you could replace the ECU with a PTW 2008 version, however ive been asked may times to replace 2007 electronics in PTWs for 2008 , and the two collide, and the ECU doesnt slot down fully into the gearbox shell.
i got around this by very slightly taking the trigger back (but not as much as the shorter pre2007 one.
its somewhere in the middle which as you can see by the photo below is about the thickness of a fleas ****
if you wish, PM me and i can swap the microswitch on the ECU for you.
or you can buy a programmable ECU as described here:
https://celcius-ctw.forumotion.com/t318-electronic-upgrades-for-celciusive included a picture for your reference.
regards
Keith
PTWairsoft.com
![Smaller trigger travel DSCF5243](https://img.photobucket.com/albums/v628/kbrown_83/DSCF5243.jpg)