She starts to look smoother already, Spiros @fiveten
Same experiences for me on this kit. Only consisting of a few parts, but requiring quite some attention.

Engines under preparation...

Thanks my friend @johnb! Indeed, fit was average, requiring attention.

And some more filler...

Thanks my friend @airbum! Indeed, quite a bit of filling and sanding.

The canopy really looks great after you "massaged" it into position, Spiros (@fiveten). The canopy is probably the only thing on the kit that can't be scratchbuilt if something goes horribly wrong. Great save.

Thanks my friends @eb801 and @gblair! Heller produced really fine models in the past, even tackling more esoteric subjects no mainstream company would produce back then.

Generally, Heller got the shapes correct, but was sparse in the details provided at key areas (cockpit, landing gears etc). Whereas Heller kits are buildable, for todays standards are to be regarded as limited run, as fit usually needs attention.

Decals are sometimes not well registered.

Coarse sanding and first filing session on the front transparency, also another filling and sanding round to the rest of the plane...