ColinB, I'm a bit late to the party, not been on the Forum for a long time! I too pre-ordered the Fell, and based on issues with a previous purchase of KR's GT3, I should have known better...! My Fell has the same stuttering, jerking, cutting out, caused by the exact same defect - badly adjusted / engineered pickups. Adjustment has helped and following some decent running-in it now performs to a just acceptable level. Can you tell me exactly what bogie you are fitting to get pickup from the bogies please? Unfortunately I also have another fault.... My controller (Railmaster) doesn't seem to recognise the ESU LokSound 5 decoder, and whilst it tells me it is writing to it (cv changes for volume, acceleration and deceleration) nothing actually changes. I tried to re-assign the loco's DCC address, and that's where it all went wrong! It then refused to communicate and a decoder reset has not reset the address back to 003 as it should, leaving me with an ornament. Following communication with them, KR have sent me a replacement decoder to install, that is this afternoon's task - should I decide to endure the cold in the loft. I'm wondering if it's possible that my Railmaster needs to do an update to recognise this decoder, although I have written to "unknown decoders" previously with no issues and changed their address, volume etc. This has been 2 out of 2 fails for KR models - the GT3 had severe derailment issues due to an incorrectly engineered front bogie, also its front buffer beam sits twisted due to incorrect fitment of the beam against other components. I now have pickup and decoder (not necessarily KR's fault, to be fair) faults on the Fell, plus an over-glossy finish..... I won't be returning to them again. The thought of their Lickey Banker is tempting, but twice bitten and all that......