Few questions under oil pan

Well I've been getting a knocking noise:mad: but only after the motor has fully warmed up and then oil pressure gets real to about 15 PSI, (its at 60 when cold) so I pulled the pan to look underneath and see if I can't see anything.:eek:

I've put on a new oil pump and screen already since I have it off and from what I can see everything looks good under there but I could be wrong

The only bearings that seem to have any play are the rod bearings and its just slight movement forward and back which I believe is normal? :rolleyes:

Just wanted to know if there is anything in specific I should check while the pans off.:(

Oh yeah its for a SBC 350 and are you supposed to use silicone on an oil pan, because I know your not supposed on a transmission pan:o

Thanks

http://img136.imageshack.us/img136/7610/cimg2089lb8.jpg
http://img217.imageshack.us/img217/8231/cimg2090dk8.jpg
http://img215.imageshack.us/img215/7103/cimg2091ld7.jpg
http://img215.imageshack.us/img215/1093/cimg2092ni7.jpg
http://img215.imageshack.us/img215/2282/cimg2093ec7.jpg

What do the bearings look like? Might want to plastigage them for a quick check and see if one is loose.... Hard to tell anything with the caps all on....