JeTFiN

Hello, I'm having a real issue with electrical pickup on my N gauge Dapol A1X Terrier. The chassis has a contact for each wheel, but it seems as if something is awry that causes them to not contact properly - only the middle wheelset seems to be providing adequate contact. Has anyone here made improvements to the pickups of an A1X or similarly small loco who would like to share their process? Picture of the chassis is from Tramfabreik's website - I'd recommend using their coreless motors when performance on a motor is undesirable. I've had a good time with their N gauge Dapol Class 52 kit. Thanks