Separate sites for USA & Canada or one combined site?

[barryk]

I have a manufacturing business and produce product that we sell in both USA and Canada.  We have one location in Canada and one location in USA and both have GMB pages for them.

For the past 3 years I have had 2 websites with the purpose of thinking .com is needed to rank in USA and .ca is best for ranking in Canada.  As well my prices are different for the 2 countries and I want to be sure people are looking at the correct product/pricing for their country.
My rankings for .ca are very good for ranking in Canada.
My rankings for .com are not as good for ranking in USA (rank 6-7 for important keywords).  My .com site also ranks in Canada at about 6-7.

I am curious about switching to only one domain (.com) for both sites as I wondering if I am diluting things and harming my 'brand name' across both sites.  I don't want to lose my high Canadian rankings. Also not sure how to direct people to proper pages at site for pricing etc.

Any thoughts?