I have the OTTO 20 cam and there is no lifter noise at all, sure is cold blooded below 30 degs. Can hardly keep it running for the first 30 sec or so. Have to pump the heck out of it to keep it going. Chokes are working properly also so I dont know why the nature of cold starts is. Pete Inman 65 Evening Orchid Coupe 110 4 speed 61 Rampside 3 speed