HI Stu,
Get Flex Coat Epoxy & measuring syringes from Norwich, cork from the dude on Ebay and guides from Hopkins & Holloway
http://www.guidesnblanks.com/ Get Seymo American patter hard snakes 619AP, sizes are on Sage Website
If Muir will make you an insert for the 590, I have some Pac Bay fittings that will do for that. Other than that, decent seats are hard to find which is why we are making them up. Company called Hi Level in Sweden have some nice ones and a company called rod rings & things in Devon supply Pac Bay stuff, the seat I put on my 790 came from them, it's a Pac Bay CL7RC-B which is a light weight black Al job. Struble have some stuff left in USA, REC do nice seats too but both are expensive. Get REC winding check too, Pac Bay ones are too big for the rods we are building up, very chunky for lighter rods.
Cheers
Ben
