Never seen a rod bolt break before conrod does on any DW/XUD engine that hasn't smashed a rod first. Usually find a crank with a perfectly held on big end complete with bearings, just the rod snapped off above it!
Unless you're spinning it significantly faster, I would leave them alone - conrod bolts aren't required to support increased power levels, rather increased engine speeds.
Unless you're spinning it significantly faster, I would leave them alone - conrod bolts aren't required to support increased power levels, rather increased engine speeds.