Is these are the screws your referring to. Mine were too short right out of factory. Had to buy them longer. I used m2.5 12mm long.
https://www.amazon.com/gp/aw/d/B0B6HYP24L?psc=1&ref=ppx_pop_mob_b_asin_title
My heatblock kept coming out as it was printing. It was horrible.
