Not so far but I went heavy on my initial SMB stockings, I do believe that my GSH are somewhat limiting the recruitment of SMB now which is not necessarily a bad thing for my SMB. RES over 7-8" are growing like gang busters and in great body condition, my smaller RES that are competing directly with the larger GSH are more average body condition. If the GSH start getting out of hand I may add a few HSB.