I currently have a FSA SL-K LIGHT ABS BB386EVO with a 110 BCD ABS 4 hole bolt pattern (https://shop.fullspeedahead.com/...b386evo-crankset2019) . My rings are currently 52/36 and want to change them to a 55/42 (preferred) or 54/42. It doesn't appear that FSA sells those chainring sizes and as best I can tell I can't use SRAM/Shimano/Rotor chainrings on that FSA spider? Anyone have any suggestions or is my only option to change out the whole cranks set? Trying to avoid that as my left crank arm is a stages powermeter so changing everything out and getting a new powermeter is going to get pricey.

Thanks