Hello!
Indeed, it is disappointing to here that with a brandnew transmitter there is such a problem!
When I got confronted with the problem the first time I didn't own a ProfiTX myself. It was rather a club fellow who had this particular problem. I was the one to repair it when we got the replacements from MULTIPLEX (fast and free of charge). Later another fellow suffered the same problem but he did not get only the little plastic pieces that got broken - he got a complete stickset.
About two years ago I bought my own ProfiTX but so far the problem has not occured and it has not occured wiht my fellows again. MULITPLEX affirmed me that they already had redesigned the crucial item.
with regards
profimc