I spotted right in the top corner on the instructions in tiny print - Scale 1/350.
You already know Pegasus have some sort of fixation about angles. I was looking to see if I could use any of the bits they supply for their re-fuelling system - maybe I could adapt them.
The main arm is supposed to pivot on a hole/pin arrangement. No. It won't move because the flat base of the arm is flat to the base when in it's mounting. Raising the base to allow the arm to swivel stops the nozzle fitting properly in the rocket.
The actual bit that takes the fuel to the rocket attaches at an angle (surprise, surprise) to the arm. Supposedly like this
There's a D shaped peg which fits in a D shaped hole - like this
They supply a piece of twin electrical cable to represent the fuel hoses. This is supposed to be twisted through 90 deg, led up the side of the arm in two grooves Then it's supposed to go over the circular connecting socket and then on to the smaller arm. To do this, you have to twist the twin cable through 90 deg, feed it over the circular support, then twist it back through 90 deg to get it to lie in the grooves in the smaller arm. Can't be done as the cable diameters are too large to be twisted in the small space available, and if you don't twist it, the circular support stops it fitting in the grooves!
If they'd left the twin cable lying flat instead of turning it on it's side to run up the fuelling arm, they'd have had no problems!
Sheesh!
No more about the fit issues I promise. I've got all of the main rocket assemblies done now with no more problems, and being filled and/or primed. I removed the pins inside the fins which were supposed to go through holes in the locating tabs. The fins fit fine without them and now I can paint them separately. Pics when they're done.