Can push-rod tubes be replaced 'in situ' (in place)? I know
air-cooled engines can have them replaced using an "expandable" kind,
after removing the push-rod.

Are these available for the WBX engines? Where to buy them?

Thanks,
Dave
--
Dave Carpenter

Whatever you wish for me,
May you have twice as much.

"Sometimes I think we're alone in the universe, and sometimes I think
we're not. In either case the idea is quite staggering." -- Arthur C.
Clark