I have had the Tied secondary for almost a year now and just got my first full ride after breaking in my drop in kit.
I'm riding at 5000' on average and up to 7000'
13.1 Head
Stock primary spring
10-66 weights
Tied secondary 73-57-(I can't remeber the 3rd angle) Team red secondary spring. It is the kit from Team Aftermarket, just install and ride!!
The sled is taching 8150 rpms and holds it; I may drill out 1/2 gram of weight out just to gain the extra 150 rpms.
Overall the sled runs great, noticable power improvement and will only get better with the extra rpms, backshift is great. No complaints here!!