[James Rogers]

Here's my take on this. If the clearances are correct, you are not going to force anything out of the mains even if you rotate the crank. .0015 is just too tight to get any "fluff" out. It is so close even oil has a hard time passing, is this not what keeps the rear leaks from happening. A pipe cleaner might work if you bend a L on the end and rotate it to snag the "fluff". Even this is no guarantee. You might think the tube is clean and it could still be clogged. To be frank, there is no way to be sure except to remove the crank and clean everything.

As far as my method of cleaning blocks and parts for rebuild Vince, till you call for a rebuilt engine and can prove I do substandard work, it's none of your business. I really don't appreciate you making that kind of snide remarks.

Like I said, take all information here "with a grain of salt" and beware of the consequences, including mine.