Filled gaps can be cleaned up using nailpolish remover. This minimizes the otherwise required sanding.
After the assembly, the overall model got a light grey primer (using Revell 75 light grey) ; this will reveal any small flaws and gaps that need some attention. After that a first coat of dark gloss sea blue was airbrushed and the model was side aside for a couple of weeks.
After a while a problem was discovered with the large wing part. After fitting the heavy tiptanks, it would not stay straight but bended as seen here....
When the model was turned upside down, the bending continued towards the other side using the law of gravity. So the problem was not a "memory" problem in the resin.
After sending an email to Fisher Model and Pattern, I was told that the problem was indeed not caused by the resin having a "memory" but was really caused by an error during resin production and now definitely resolved.
Fortunately, from Fisher instantly a new wing and even some extra parts were dispatched.
I fitted the new wing part and the problem was solved. In the picture the upper blue wing is the old wing, the lower gray wing the new straight replacement resin part.
It was fitted to the Panther without further problems. The undercarriage legs got some extra brakelines made from thin metal strip.
For the under wing stores a lot of optional stores are given which are all excellent.
Select what you want and choose the appropriate provided pylon.
For creating the canopy different options are given.