Looking at the #2 bearing in both the block and cap - I wonder if the bearing was mfg incorrectly. It would not appear to me to have enough crush to be retained correctly in the saddle/cap. Does another of your bearing - say #1 - have the same fit problem if placed in the #2 saddle?? If it also has the same fit problem - and - this block was honed - maybe that saddle was machined incorrectly. Also that much gap would cause a loss of oil pressure at the parting line.