Nothing serious and not something that i'm working seriously, i'm trying to combine the cross with the mu.
During the last 6 months i've worked on IC (very slowly) and weighted RC.
As expected by Coach suggestions RC is giving to me a good foundations so that no DOMS are not perceivable in the joints (tendons) but in the muscles after the IC work (on the following days).
Probably with some serious and slow progressive work i'll get the cross in one more year.