The hobby shop faversham has some great bargains. Check their departures board for up to 50% off on selected OO and O gauge locos and rolling stock plus accessories.
Hi, I had the same with a q1. On one point only the wheels would short but had correct back to back measurements. Solved by a blob of paint on the point in question to effectively extend the dead frog a little more
No more artificial than drs and it would give a driver the opportunity to counter a move without dangerous weaving / being a sitting duck. Agree we shouldn't have to have these add ons in a perfect world but they do add a bit of spice and tactical nouse.