The 'other' question: "Can you make adjustments?" Yes within limits. It's hard to spread the flangeway out because the fixture grooves set a maximum shift. You can however, file slices off the base and hold the rails tighter when desires. Caution: You don't want too tight a flangeway at the frog-wing relationship as that can affect longer wheel base equipment. Setting the flangeway on the guard rail side is best done with track check gauge from the frog rather than the adjoining stock rail. On a crossing, all the relationships are close and tight. Be sure and use a fixture made for the rail you choose to employ.
-ed-
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-ed mccamey-
COSLAR RR -
http://www.coslar.us/NMRA Standards and Conformance Department
PROTO & FINE Scale Coordinator
I estimate I have about 5 pounds of coupler springs somewhere in the vicinity of my workbench.