ole , I have these springs installed on the engine already, But I did have a set of single green stripe springs that I had bought from NR Racing that I thought was suppose to be 37# on the Honda/Clone engines , and if I remember correctly needed to be set at .815 /.850 , springs uncompressed length was 1.250 and wire diameter was .100 . Tomorrow will be fine on the spring test no hurry as I still have the head and valve cover off the engine at this time . I think if anything I'm a little strong on the spring set up at this time . I'm going to test the another green stripe in the morning , but I think I found the problem .