So, just got a new long block installed and also installed a new clutch at the same time. The 'reputable' mechanic that I used is starting to cause me to question his reputation. Maybe this is not an issue, but I feel like it is. When I am taking off in first or in reverse, the clutch disengages fine as the car starts to go, but at the end of the clutch being disengaged, the car shakes horribly. Almost like a stalling out feeling, but much more aggressive. The clutch has about 350 miles on it now. It does it the worst when my rpms are between 1200-1600. If I rev up to 2k or so, it goes away. Is this a break in feeling or did the 'reputable' mechanic fuck up the installation. I have the ACT 6 puck clutch kit. What are y'alls thoughts? Thanks.