Like Vincent I also have some experienced buddies throw in their opinion and then honestly just try and fix it through trial and error. If my lockout is feeling and looking like a weak point I add in a bit more top end work to ME movements whether it be bands, chains, boards and/or a mixture of such. I've found a lot of times its the small stuff like assistance work whether it be doing too much or too little that greatly effects certain sticking points for me, reviewing old logs is a good idea for sure.
Say you are struggling at lockout. Do you just assume you need to do more board work? Is it possibly a speed issue? Could it be a setup/technique issue?