i had my demon fitted out in the 1050 combo but it ran like diaherra, when i spoke to scott? at demon carbs he told me i had the wrong combo & to make it into a 1025. he even sent me all the parts at no cost, which is totally unbelievable for a US company to do something like this to me living on the other side of the globe. the 1025 venturies have .040 more venturie effect & the carb is very well mannered compared to the 1050 even tho theres only 25 cfm in it. hence the reason i'm contemplating a dommy to gain the extra cfm if it will make my combo run stronger.