Oxcart

Hi I have two cars set up as pace cars , two Mclaren Mp4 12c , one of them stopped working it was the wire snapped at the front and I couldn't fix it , bought a second hand car another Mclaren and just swapped in the digital plug chip from the broken car but replacement car still didnt work , so I then swopped digital chips with the other pace car , both worked , so I then swapped back the chips to the original cars , since then I have no control on the speed of the cars as soon as I put on the track they take off , at full throttle , this is with no hand controller as they were set up as pace cars cant calibrate or do anything to stop them going at full throttle they both do this when the track switched on , and haven't even opened the app , both still do it when app opened I have put other cars on and they don't have this problem , none of these are used as pace cars what have I done and can it be fixed ,

yeah it is very weak , had a good result though, talked to Scalextric and suggested i send an email to the technical dept , got the part within 2 days , absolutely brilliant from Scalextric

hi does anyone know if scalextric have parts for cars i need a new floor pan for BMW jordan C4194 , the front bit of the car holding the contacts has broken in two , the outer housing bit where the screw goes through to hold on the contacts kids too excited and a bit of heavy handling broke it