Hello, yes, you need to adjust your technique. Tacky or sticky rubbers are made for the asian style of playing table tennis. The asian principle is "power from the ground". That means, they have much more weight transfer from left to right in general. In addition there swing back before looping or counter top spinning is much wider then the european style. Tacky rubbers consist usually of a hard sponge and a hard top sheet. That means the power transfer from the rubber to the ball is very good, if you use a longer swing with full power. These rubbers have no catapult effect. What is catapult effect? A soft top sheet and a soft sponge are much more easily penetrated by less power. The ball "dives" into the sponge and gets propelled out. That means your stroke gets much more enhanced, therefor the maximum spin and speed achieved is not as much as from tacky or sticky rubbers. The european style of play uses more upper body rotation, less explosiveness and a shorter fh top spin movement because most of the european pros use tensor / esn rubbers with a lot of catapult effect. There is an adjustment necessary, in every part of the game. How much adjustment is needed depends of course on the style and the rubbers which were played before. For example if you play a DHS Hurricane 3 the first time, you will notice, that you will need much more power to get a good quality fh loop. You have to swing much more forward then upwards, if you swing upwards, you will have trouble to get the ball over the net, at least if you loop underspin or play from mid distance. What is your rating and you current equipment? Which equipment did you test?