I got your chat last night, I wasn't online (apparently you can't reply to a chat anymore). I'm assuming you are refering to the 504.20L builds? To answer your question, I'd like to see 125 pr of parts tested for both MR Chirp and fly at both rpm's. You can use the same parts for both rpms. Please do the fly testing on the S5 asap. I would like to report the data tomorrow if possible.