I finally put in the sending unit for my autometer oil pressure gauge last night and something is a little weird. I couldn't put it in the same place as the stock sending unit because the only sending unit I can find behind the distributor has a 3 wire plug coming out of it. I put the sending unit in right above the oil filter. There was a little bolt plug that I pulled out and put sending unit in there. The problem is that I seem to only have 25psi of oil pressure. The gauge is acting like it should and it reads about 25psi at idle but it doesn't really move when I accelerate. It will move ever so slightly when I give it gas but it stays on 25psi???? My engine burns no oil and runs great. Is this not an ok place for the sending unit? Should I start looking into oil pumps?