Well spent best part of an hour lovingly forming a tie bar from paxolin only to snap the ba$tard.
To be honest the only way to fit them is off the board, as they can only really be fitted from underneath (unless you like crying), I now seem to remember
I've always gone the Norman Soloman method before and never had a problem (well to be honest I've only ever fitted them to test track but they worked ok for the limited time I've used them).
Norm explains how this is done in the trainporn masterpiece that is (was) 'Right Track 10 - Laying Terrific Track' DVD. No longer available, C&L used to sell it but you might find copies on eBay from time to time.
Anyway, for those that want to give it a go here's the dimensions for the tie bar, you use bent and trimmed lace pins through the paxolin (or non conductive material of your choice) to solder to the point blades.
Anyway, time to tidy up my toys so I can find them tomorrow.
Cheers
Wubya