u/Ashamed-Tax-8116

Recently bought some Profile Design aerobars, which came with 5, 10 and 15 mm risers. I orderded a 30 mm riser, but now think I might want to go even higher to maximize comfort. Could I add these to existing risers to get to 50mm or do I need to get new 50mm risers which are quite expensive? Does anyone have any expeeience with combining risers?