Thanks all - much appreciated!
As for the Perfect Plastic Putty. It's a water based putty that is pretty useful for filling small gaps and areas where you don't want to do sanding. Normally I use it on wing roots, around canopies, intakes etc. (or around areas were I wanted to protect the detail)
Here it is with my other go-to filler - Revells own brand Plasto. As an aside, this Plasto is really good, I started using after I'd tried pretty much every other brand of basic putty on the market (I used to have a drawer full of tubes that I'd tested!) and it came out tops - it's really fine, a good neutral grey, sands well and even takes a bit of a polish with the fine sanding sticks
(man I need to get a new tube)
I start by putting a dollop on a Pringles lid/paint tray (your flavour may vary)...
...and using a sharpened or chiselled cocktail stick apply it to the area (in this case the intake join).
Note 1: It does shrink a bit when drying which when doing a bigger area such as this intake, so I'd normally use a few layers to build it up.
Note 2: As it's water based you can re-wet it and remove what you've done before so I normally add a coat of primer between layers to protect it.
Then (straight away) using a damp cotton bud/Q-tip I remove the excess putty by wiping it 90'-45' to the gap. The bud will get clogged up pretty quickly so you'll need to clean off the excess or get a new one as needed. Eventually you'll end up with this, but don't try to remove all the residue now or you'll drag out what you've just done.
After it's had about ten minutes to dry, you can then go back over it and remove the last of the residue with a damp bit of kitchen towel (paper) or another cotton bud.
After it's fully dry I'll give it a buff with a dry cloth and then brush a bit of paint over it. I'm going to do this to mine later and then give it another coat of putty as the gap isn't fully gone in some places.
Just another note - this isn't a very good putty to use if parts are poorly fitting or will require a lot of sanding e.g. these intakes fit pretty well, for poorly fitting ones I'd have used normal filler and sanded to shape. The same goes for steps or anything that needs building up and sanding.
I hope that helps - it's another tool in our arsenal.
Cheers!
