I still don't have a great deal of progress to report, as I have had a bit of a self inflicted war with the coupling rods.
Problems began when a countersunk slot screw refused to budge from holding a wheel in place. Unfortunately, the allen key slot rounded and I resorted to drilling the offending screw out.
Slaters did replace the axle and screws for me a couple of days later.
The crankpin screws were 'cheese head' and fouled the chassis, so I drilled in to the rear of the wheel and sunk them in. Possibly during this exercise, I may have inadvertently caused the screws to not sit exactly at right angles to the wheel faces
Anyhow, this took a lot of faffing, decrying kit building forever, threatening to go RTR 00 etc. etc. Poor Mark JJ got the brunt of this, and Mr Dog Star also advised. During a conversation with David Sharp, he advised to open the con rods a tiny amount, and every thing put together has worked! The chassis is incredibly free running now, so I can cheer up and should have the brake gear, etc on soon.
Lucky I started on something simple!!
