cheeta reverse pattern 2nd to 3rd problem

i dont have an answer to this but i do have a question that you might be able to answer i am running the cheetah reverse manual valve body and it works great i do understand that they do not use the low reverse band in gear so when i am in first and cruisng and take my foot off the gas it goes to an idle then if i mash it it raps up to just about what my stall is and takes off like a bat out of hell..just want to make sure this is normal lol first tranny i ever rebuilt and is holding up great..do you experiance this also??