One of the pundits on ESPN suggested Eury, Jr. might go to HMS to be something less than Crew Chief, retaining Gustafson as CC.
I am one of the opinions that Junior will have LESS wins with HMS. His team will not share the shop with the #24 and the #48, it will share with the #25.
And regarding the #5/#25 shop, I believe Shrub’s success was more due to team talent than equipment, and I believe SlowCasey’s success is flukish. The fast equipment, the ingenuity is in the #24/#48 shop. And for whatever reason, they are not sharing all their secrets with the #5 and #25, as this most recent dust-up demonstrated.
I wouldn't make that assumption simply because the 5 and 25 did not have the fender modification. It could well be that the 5 and 25 teams rejected using the change. I know for a fact that the braintrust for all four teams meets weekly at HMS HQ, and that they do share notes and other info. But the teams are free to use or reject ideas as they think best for their cars and drivers.