Re: Few problems?
It looks like a slightly modified version of Starting Strength.
There's a few things you could do.
1. Lower the weight you're using by 5-10kg then build back up slowly.
2. 5/3/1 is a great routine by Jim Wendler which you may like to try. Google 5/3/1.
3. Lower the weight a little then try and do some extra reps with that lower weight. You don't have to up your 1RM to get stronger.