If you are using a lot of crimped cases you definitely need the hold down rod. If not then any of the expander dies will preform similar. Their are aftermarket hold down dies.
I have a mighty armory one on my process head . If buying today I would look at the FW armory one. Another option would be to have the shaft "turned down "to a slightly smaller diameter. I still use the Dillon die on my individual load heads. I am not experiencing your issue.