Umm, I don’t know quite how to say this but I guess a big sorry guys is a good place to start.
Incidentally, anyone else looking for Milliput should go to Hobby Lobby’s Shop Online section; my sister-in-law works for them and told me they have it there.
Tamiya putty filler works great, drys fast and sands well. They all have fumes due to being able to ‘bite’ the plastic. Due to the fast dry time work very quickly. One more, it can be thinned as much as needed with Testor’s liquid plastic solvent cement. It will ‘bite’ the plastic and will take a very long time to dry, expect this mix to not sand well.
The last tube of Humbrol putty I bought was well over 20 years ago. It may have changed since, but IIRC, it was very similar to Squadron green putty in consitency, smell and colour.
Milliput isn’t what I’d choose for filling gaps… I use it to make seat cushions, sandbags, rucks, sculpture arms & legs, and stuff like that… I’ve also used it for making molds. For filling gaps, I use Testor’s white (it can be thinned with alcohol so it doesn’t harm anything near canopies) , but most often I use Bondo Red glazing putty. I get it at auto parts stores and it’s cheaper, ounce for ounce by far than “hobby” brands of putties… It thins with Testor’s liquid cement, and dries fast, wet-sands nicely, and doesn’t need primer-surfacer.