Custom Tab Order in Repeating Table Issue

Question

I have an InfoPath form with a repeating table. To give a little background.. It is set up so the user adds a row, then closes/saves it, if they come back again on a later date, that row is read only & they have to add a new row. So.. on to my tab issue.. I had to manually go in to change the tab order because they didn't flow correctly. Now it goes perfectly ONLY if there is one row.. When I add a new row, the tabs toggle between the read-only rows & the new one. I don't want it to tab into old rows.. Does anyone know of an easy way around this?