My 2 cents for what it’s worth... I think you’re on the right track asking to compare TP size with someone owning a full power version. I’m mostly chiming in to say that I would not at all change the shape of the TP unless yours is different from the ones sold in the US. I recently had to research this issue for my gun. It shouldn’t cost much to find out if it’s the spring if you can order a new one. Or check Spanish websites or eBay to see if there is a “lower powered” gas spring that can be purchased, if not then likely it’s TP size. Maybe you can look up the part number on your gas ram?