Before you buy new springs or shock try to get this one set up properly.
Set first set the sag. That's the amount of suspension movement that is taken up with you sitting on the bike.
A reasonable starting point is to have the bike move through 1/4 to 1/3 of total suspension travel with the rider sitting ( feet up so you may need help balancing the bike). This is adjusted with the pre load.
If you can't get this sag correct with the pre-load adjuster you may need a stronger spring.
If it still bottoms out with the sag correct try dialling in some compression damping ( if the shock has it adjustable). If not try increasing the rebound damping because some Hagon shocks have the compression and rebound damping increase together.
Let us know how you get on.
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