I've seen some aftermarket tubes a little big on the OD at the top, so check closely and be careful tightening down your top tree. I do have proper D washers but can't pull the bolts down until the washers are trapped. I torque them now. Rhino horn breakage is a heart and wallet breaker, thank goodness a member here sold me a box of left over parts with one included.
I'm sure Franks are top quality, mine may have been from 4-1 or Z1 parts. I can't remember for sure but I am sure they were not made in Japan or US. I haven't had any from cycle X.