I have the head off, I was prepping the block deck to reinstall the head. I rolled up shop towels and stuffed them into the coolant and oil passages to prevent scrapings from falling in. and after a blast of compresed air I blew one of the shop towels down into the block... cant vacumn it out nor pick it out with a paper clip... cant even see it, what should I do? is there a way to get at it from the under side? Its the smallest hole on the timing belt side, closest to the front of the car. It seems to widen out after 1/2 an inch down.. I might be screwed. The block is still installed. LEt me know stuck at this point. Shop towel is a 1 inch by 1 inch square maybe a bit smaller. Its the blue paper towel type shop towel. If I forget about it can it block off a coolant passage later and cause engine damage?