Thanks guys. It's progressed a little slowly since then. The kit cockpit detail is nothing like a He 162, so I've spent some time in it. It's far from perfect, but it's a little closer to what it should be, and will do for a closed canopy in this scale.
FWIW, I've done the following.
Modified the seat
Added harnesses
Added internal airframe detail
scratchbuilt an IP
added other prominent features of the He 162 cockpit
Then we get to the canopy. I hadn't realised until I went to cut it from the sprues, that it has two prominent tabs, one on each side, to make it an 'easy build' and fit it into the cockpit opening, much like a snap fit kit.
Very inaccurate, and worse yet, the canopy plastic is thickened inside the canoped where the tab is, so its very obvious. I didn't think to take a photo of them, but I did after I'd used a hot know to slice off the tabs. You have to cut and sand off this thickened plastic, then restore the inside of the canopy back to a clear finish. I've done it, but this feature alone makes my decision that I prefer the Dragon kit. Check out the photos.
I've primed it before work this morning, I'll have a look at how that went after work tonight.
Cheers
Tony
This shows the original cockpit.
Modified cockpit. I refined that lump in the middle of the floor some more by shaving it down to size and smoothing it out. It's made from Milliput.
Ready for primer