Bermuda Headaches (merlin???)

[matthew horner]

Last year, I sowed a lawn in bermuda. Came up PERFECT. Like carpet. I advised the homeowner to cut it short and to date it looks great. This was last year. This year, I've done two. Same procedures, same soil types. Tilled, rolled, lime, start fert, and bermuda seed. All Lesco products. Except this year, I'm getting areas about the size of basketballs that aren't coming up, and WEEDS. So many weeds. I've been cutting frequent and short. The grass has been up for about 3 weeks to a month. What can I put down now to help control this before it gets out of hand. I know bermuda should be taking off this time of year. Please help me.