The Gills were beaten 7-0 by the Shrews back in September - with Holt scoring once that day, before grabbing both goals as the visitors hit back from 2-0 down to earn a point in the return fixture at Priestfield in March.
But Stimson insists revenge for the early-season hammering is not the main focus of his side in the League Two play-off final on May 23.
"We just owe it to ourselves to put on a performance," he said.
"When we played them at home second time around, we did that and we nearly got the three points, but again the big man (Holt) came good at the end.
"We let the players have a couple of days off and I told them to enjoy those two days. Wembley takes a lot out of you so we've got to be super fit. (Fitness coach) Danny Ellis will be in a couple of days this week and then we'll have a nice free week preparing to try and stop the Holt man because he is dangerous."