wrote:
: Do you have a full flow oil filter (I hope so!)? Otherwise break-in
: steel from the cylinders could be scratching in the bearings.

: I would think it strange that a bearing would fail just because you
: changed one or more cylinders. Increased loading from new jugs sure
: isn't going to cause it.

Perhaps a cylinder isn't on exactly perpendicular to the crank and it's
side-loading a big-end bearing? Are the base O-rings pooched out somehow,
or is there paint around the cylinder base nuts?
--
Aaron Coolidge