My wife and I recently acquired an older v.c. resolute, and I am having trouble figuring out the size pipe to use. Opening is 6 1/2" by 5 1/2", and I'm wondering if it is meant for an oval to round pipe, or if the 6" is just pressed out of shape to go in? I would like to use 7" pipe, if possible. Any help or instructions would be appreciated.
Thanks
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