I have an 86 engine that I just built up to a 347. I unfortunately didn't realize that the oil pump shaft went in while installing the oil pump. I thought I could drop it down through the distributor hole to install. The shaft does have a retainer but I was wondering how to install the shaft from the distributor hole and if there is way to keep it seated in the oil pump shaft if I need to remove the distributor so that it does not fall out of the pump. Please help!! Thank you.