Currently i figured out how to do this with mortars:
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Make it stretch out perfectly:
Stage 0 has to be a single sshot that hovers under the mortar..
Stage 1+ has to be completed just how you want it..
After this you create an exact copy in stages so its like its doing what it was twice (leave out stage 0
Just set the delay to 0.1+ and you have yourself an extra stretch :)
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