Just thought I would pass on a tip for sealing washers for the monobloc or others. The bottom jet holder nut(the main and needle jet) was leaking like a good un and I needed the bike for Monday. Had no fibre washers bugger. Went to Halfrauds(correct spelling
) nothing doing unless I wanted to purchase a whole fibre washer box set(£8),no I just want one!. Also they are all metric so it would be compromise-sp? that in most cases would still leak. I had a brilliant idea-hooray me-went over to B&Q they would have tap/plumbing washers in fibre. No there was better than that they have leather washers in imperial, pack of eight assorted sizes (4 of which fit really well) for £1.89. This morning no leak actually the best it sealed for many a year.