I have no idea what's causing this but more times than not, the R46 does not operate properly. When I put it to P1, I hear the breaks being applied. It will scrape forward if I put it at P3 but then when put into neutral it comes to a grinding halt confirming that the breaks are being applied when I apply power. I was able to operate on the "A" and "F" lines with no problem a couple of times. But tonight the breaking problem showed up again on those same routes. The fact that I was able to run the whole "F" line just last night with no problem is baffling and I don't know what's causing this. I also tried running it on the Brighton Beach "Q" exp(v6) and I have the same problem. I know it says to use the 160A but I really like the R46 cab detail and not a big fan of the newer fleets. Any help would be appreciated.