Can you rotate both parts of the shroud easy , just got a feeling , most of the ones people speak to me about with issues are moveable but really tight , mine was always quite loose and I never had poi shift , if you wanted the original set up might be worth taking a bit off the end of the shrouds so they rotate easier , still convinced if the 8 band is touching the stock at the two front shoulders your asking for trouble
FTP900 MTC connect,Welhamanium internals -sorted
HFT500, ACZ stock MTC connect
TX200 Mk3 CS1000 stock, hawke vantage sf , Nick G internals
Steyr ?, maybe , they cant all be wrong?