For the benefit of those that have Capilano steering, the new Uflex cylinder is installed and seems to work fine, albeit the steering does seem stiffer than it was before.
I had completely rebuilt & honed my Capilano cylinder but it continued to weep slightly at the rear seal. As a replacement I chose the UFLEX cylinder over an original Capilano based solely on price, not that I was at all unhappy with Capilano. The Capilano was approx $800. The Uflex was $500. Side by side the cylinders appear identical but there are important differences as follows:
Rear (ball & socket) mounting block on UFLEX is larger so it will require new holes to be drilled. Not a big deal because it is also 1" shorter overall so the mounting block has to be moved forward anyway. Note that Capilano uses 9/16" bolts, the Uflex 1/2".
Because the UFLEX cylinder is shorter it has slightly less volume, 3oz as I recall.
The Capilano cylinder is tapped for 3/8npt fittings, the UFLEX is only tapped 1/4npt and comes with compression fittings for plastic flex lines. (I discarded these & used 1/4npt to 3/8 flare fittings with proper 3/8 hydraulic hose.
Not certain of the effect of slightly lowered volume or the potential restriction of the much smaller 1/4 npt ports
My original cylinder was a BA200-7TM, the replacement is a UFLEX UC293-1 These are both 7" stroke but available in several stroke lengths.
I have the 3 line system using the uniflow valve. Given all the difficulties I had in rebuilding this system, I wish I had simply bought two new Capilano helms & a new cylinder & be done with it. As the uniflow is obsolete I will be re-visiting this headache again.