Couple misc. questions, O2 sensors/Edelbrock heads

i have a couple misc. questions i've come upon while pulling my engine and preparing for my new one.

i have edelbrock performer rpm heads, pedestal mount. i took my stock rocker arm bolts i was using and went for a test fit on the heads. they dont fit, what size bolts are you edelbrock head users using? i looked up the edelbrock bolt kit (#8552) and it gives no sizes. what sizes should i go order?

i had to unscrew my o2 sensors to get my headers off. so they were sitting on the floor still connected and when i pulled my head, all the coolant leaked on one of them. it got quite abit of water on it, is it toast now from the water or will it be ok? it will have plenty of time to dry out im sure, but im not familiar with them really so i wanted to check.

lastly, i cant seem to find the upper to lower intake gasket for performer rpm intake. i got part #7220 off the edelbrock site, but on summit and at my local shop it shows up as nothing. does any performer rpm user have a different part number? or possibly a felpro number for it?

thanks alot

alright, ill just call up edelbrock and knock both of my questions with them off the list.

thanks, first engine build/removal has brought up alot of questions

i bought the head bolt bushings, but the rocker arm bolts are too large.

the stock at 5/16 are too large, so im thinking they are 1/4". i waited 30 minutes on the edelbrock tech line today then just hung up so ill have to try tomorrow or just buy some bolts on my own.