My RST cabby had to go back to the MOT station 4 times as the guy that converted it really did a shit job, he changed all the suspension and made a right cowboy job of just about everything. Everytime I took it back they found more things wrong with it. You should spend a day going over yours and making sure that the conversion has been done properly and that things have been connected up properly! I wasn't carged any extra for taking it back so many times (this was before the new mot rules), but it did piss me off that the previous owner had messed it up so badly. After getting it through the mot I have took the car off the road and I'm gonna do a full rebuild and maybe a ZVH conversion so that I know everything will be how I want it and how it should be.