1982 617 balancer install

Kent,
I am replacing the front seal in a 1982 300d. I used the kit and the seal installed quite easily. The problem occurs with the install of the balancer. The two pins are not attached to the balancer on the 300D as it was in my 240D balancer. The problem is that even when I heat up the balancer to 300 degrees in a toaster oven, (it can be positioned for nearly a minute) the pins do not fit into the holes. Every time I try to insert them, they go in partially and then stop with most of the pin sticking out or on a angle.
Is there another trick or should I file a bevel on the bottom to help set them in. When trying to hammer one in, the top ended getting peened and I had to file the lip off. Is it allowable to drive them in with a drift and hammer to avoid the peening? Thank you.

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