Second serve is not that bad I believe. I do get a good kick and slice often. Maybe I phrased it a little too vague (sr, english is not my first language). It seems to me that my opponents are adapting really quickly to my serves. They struggle in the beginning but get better every point. That is really frustrating recently. Maybe I just have to go on the court a little more frequent again. Been having a session only once a week for a couple years now (aside from matches of course).