I am wondering what the difference between the 855952t and the 855952t3 reed blocks are? Depending on which website you look at one site will tell you to put in one or the other and visa versa. I bought the 855952t3 reed blocks to go into my 1999 175 efi. Should my engine run alright? I am having trouble getting up on plane. I changed the trigger assy and the reeds that were in it were not the correct reeds. Just trying to figure out if I have the correct reeds.