... , the rail can then easily rotate to 1:20 inclination in the slot: 2_291255_350000000.png If the slots are too deep, the easiest solution is to wind some fuse wire into them until they are not. A tiny smear of paint will seal the loose end of the wire. The gauge of the track should have no effect on the positioning of check rails. If you are using multi-slot gauges having more than 2 slots, please don't. Please? This is how the gauging of check rails should work: 2_102021_190000000.png More information about gauging is here, just add 2mm to everything there for EM: http://00-sf.org.uk If using combined check rail/stock rail chairs (as far as I know there are none such available for EM, despite the Exactoscale web site describing 0.8mm check chairs as "EM" -- they should be 1.0mm for EM), it is important to set them using the check rail gauges and check rails. The stock rail can then be left to its own devices through them, regardless ...