Yer that sounds a good idea . thanks . The vision port is very easy to do just cut the old one were its required ( see my pict ) . Its relatively thin so cuts easy with a sharp craft knife . I then painted the area behind the vision port black for efect . Then used some milliput to pad out the piece you have cut of to aid gluing it back on and then when its set just stick it back on leaving a slight gap. I then scored a line on the top to simulate the shape of the sliding piece as you look at it from above . I had ago today at fitting a lip around the drivers , mg guners hatches . and after three diferent attempts Ive cracked it . I found a plasic bottle almost the correct diameter and with some messing about it works . however I managed to break the hing on one hatch , the other ive already broke but repaired so Im going to buy a new set I think , pluss I had added a static locking mechanism

All the best Andy