Loosing Screws or other minor parts is a common problem among Estrellas. Just remember to check all screws from time to time. Thank god my speedo-cable is still in place, but I already lost screws from footrest an sicecovers (twice!).
Hey speaking about the side panel screws, mine are in a bad way. The guy that had the bike before me has used the wrong size screwdriver by the looks of things and the screws are well "screwed". The tops of the screws are so rough that I ripped my jeans on one of them.
Do I have to get special Estrella side panel screws or do you know of any other types that would fit.
I think Hubert's first owner just used the tolls that were on board. The screws aren't the best and the tools are even worse.
It's very easy in continental Europe to get fitting screws because they are metric. Should be "M8" screws - which means a diameter of 8mm (=millimeters) and a pitch of 1.25mm. It might only become a problem to get screws with such a head.
In NZ most screws follow the funny English system I suppose? 62/97 ... At least a Kawasaki, BMW or (modern) Triumph dealer should help you because all those motorcycles use the metric system. But maybe you find some in a "do-it-yourself-store". Take one screw with you. Should be M8.