Welcome to the Strelets Forum. Please feel free to discuss any aspect of 1/72 scale plastic figures, not simply Strelets. If you have any questions about our products then we will answer them here.
But there is one problem: some plastics have a strong memory - they will not stay in the new pose for a longer time (especially the softer ones). But every soft plastic (that´s my experience) goes back to the original shape if boiled.
I use the hot water treatment for Airfix U.S. Cavalry to get him to stay on their horses. I dip the trooper in boiling water up to his waist. I then hold for only 4 to 5 seconds, then pull out and squeeze legs, then hold squeezed figure under cold water.
Warning: Small pieces such as Airfix swords, sheaths, etc. will actually shrink-up under boiling water and will not go back to original shape. So test an extra figure first.