Update to the gearbox fault is that i now have a replacement gearbox in and all looks good. took a sample of oil out the original box and looked like pearlescent paint with all the sparkly metal filings in. luck was in and a 6 speed was had for just over a ton, so saturday was spent jacked up high and box was out in 2 hours.
new clutch kit and flywheel obtained and all assembled by five. managed to split the vacuum hose to the brake booster so another unexpected repair. A piece of advice for any diyers get a brake /clutch bleeding kit that attaches to an air line, sucked that fluid out of there and new fresh put in {it was black as coal} good bit of kit. clutch is now smoother and new oil in the box as well { thats expensive stuff}. so anyone else has a grumbling gearbox sorry but there is no easy solution its rebuild or swap. thanks for everyones input this is a good forum and hopefully i may be able to help someone else out one day.