I would just wait til Saturday to offer again. It certainly won't hurt.

How old is Klaus and how much does he weigh? Most makes never need anything larger than small rats.

As for handling, I wouldn't sweat this or count it as a refusal.

The general rule of thumb is 3 consecutive meals without refusal, but it's not set in stone. If you wanted to take him out for a few minutes to admire his fresh shed. You can also use the opportunity to check to make sure his eye caps, vent and tail all shed fully. Just keep it short and sweet and then hold off til after his next meal.