Hi Stan, I am about to start this same kit having recently abandoned the Riva due to weight issues. Unfortunately with that kit I just didn't realise how overweight Amati kits were until I was to far into the build to put it right. I just wondered if you had a target all up weight for your GB? My guesstimate based on a quick flotation test of the hull + 2Kgs of sugar is about 3.5Kgs. Right now, before I start Dremmel surgery the hull alone weighs just over 1.7Kgs.
I am also thinking of replacing the MDF and ply (particularly any ply which is then veneer covered) with balsa. Obviously the balsa will need to be well sealed but as far as I can see the MDF is used to provide a framework and there just doesn't need to be so mush strength built in.
Your thoughts would be much appreciated.....
Cheers
Spiney