Hi Malc,
Yes, the tanks fill much better now. Whilst the bigger bore filler pipe certainly helps,the improved filling may be due to the vents I've fitted to the rear of the fuel tanks. I fitted a boss to the top rear inside corner of each fuel tank, then ran 8mm braided fuel hose to the top of the bulkhead (highest point possible) & fitted rollover valves & filters. Sometime in the future I may also fit a similar setup to the front of the tanks.
Regds,