If anyone is following my CBX550 fork misadventures...here's an update:
The first repro fork tube turned out to not match the tube we removed...odd?? the new, leftside tube was shorter by 9mm than the one we took out......quick call to DS and subsequent email/image exchanges turned up the old tube was in the wrong side/leg.
I must've mixed them up when I stripped and cleaned them 5-6 years ago...cannot remember if I did them one by one or both at the same time, not realising they were handed.
So, with the help of DS (thanx Tim) I have purchased a rightside tube too, so now I have an asymetric pair that replicate what has been removed. Along with OEM seal/ductcap kit and bushes we now have everything to rebuild the entire fork set up.
I'm venturing into the anti-dive, but only to check n clean that too.
I'll post further updates on how well the repro tubes install, but I'm not anticipating any more issues at this stage.
PS I'll go back to using ATF oil from the Valvoline 10w I had in there.