Hey DK, that happened to munchers 7's too, it must have been a dodgy batch as he hasnt been on them much, due to being a fair weather bocker. I think there has been other peoples 7's have that same problem. He cant bock on them now, well not without the spare part that it needs to fix them. I dont think he should have to pay for the spare part as we have encountered problems with all the 3 pairs of T-Rexs we bought. But if anyone can come up with a solution, all ideas would be welcome. jelly x