Product review (4 stars): had problem with the dran hole
I also had a slight issue with the drain hole. I plugged it with a cut off of a shoulder bolt and a hose clamp. There are also a few new drain holes that go into the outer drum. They did not cause a problem.
I was able to get around not having the spring expansion tool by having a helper hold the gasket from turning while I stretched the spring with pliers. It's not an elegant solution but it worked.