AR25 pulls in all gear changes

Moin! I’ve only been here as a guest so far, but now also registered… First thanks to Kurt Berlin, who provides a lot of good tips and above all IMAGES. I have the following question: I bought an Omega with Z22XE engine, and because it has already 100000 down, I replaced the ATF and the filter. The oil was without finding, the magnet clean and also in the small Wanne no plastic parts. But I got tempted to use the brake tape. but it didn’t get any better, there is a small jerk with every GAng change, hardly noticeable. But now I’m a little afraid that the gearbox will break… I learned from Opel (before 12 years ago..) but my former colleagues could not give me any tips either. Error memory is clean, I checked the oil level twice already. Otherwise everything works perfectly. Timewise it switches on cold, because the gear changes were a bit rough before. start only at 3500 in the second gear, but then very hard. But that was so far only very sporadic. As far as I have seen this correctly, the brake belt is only involved in the change of GAng of 2-3, right?