Do all of them have wear adjusters? I've only seen the little grub screw that does reach. For that matter what's the fool proof way to tell the model - mine don't seem to have anything but race line written on them. Thanks for the advice btw - I would have done a full bleed.
I've a set of the first hydrostops, and yes, they have the wear adjuster, it's the small allen key rod behind the lever into the master cylinder, same on my HS11s.
For oil, I use this:
£5 for a litre from my local motor factors.
The best tip I've read for Maggies, is to remove your tyre when you set them up. Take your time, set them up once, and never touch them again. Perfect!
Models... I'm not 100%, but I think the following:
Original Hydrostops/HS22, late 80s>mid 90s (I've an original 94 bike with these on):
Mid 90s; (95>?)
HS11 was their lower range brake, and the long-lever version had a resin bodied lever rather than alloy;
HS 33 raceline, note long lever, rounded body, all alloy;
Later 90s, the rounded body gained a shorter lever with wear adjust dial:
2004, lever body changes:
Dunno much beyond that, as the levers became crap.
Colours don't mean much mainly special editions. They've used the same slave cylinders since the start.
I <3 Maguras.