I now have my Rails SECR class D , propose to use it pulling 3 coaches. Loco seems to “rise” over my peco insulfrog 3 way point when traction tyres go over “dead” frog , sometimes it stops. Any thoughts on how to cure? Also has anyone out there changed the driver for the none traction type? Appreciate haulage will suffer , but wonder if anyone has encountered problems when changing wheels and how they resolved them . Cheers!