I know this problem all too well, I’ve been experimenting with different tips since the original Bragi Dashs’. And my observations is that some modding is needed to get the ‘great seal’. Comply tips are hugely overpriced for what they are, and the build quality is sub par.
The problem with the Dash Pro’s is the shallow sound tube and natural human oils that surround the ears, it’s not a great combination for good fitment. I personally use Shure’s Olive tips, and a bit of blutack. You get 10 Pairs of foams (one size - you choose this from the initial purchase), they also come with wax guards too!
Before installation you must cut down the ear tips to half the size, then roll blutack into a very small and fine string. Wrap the blutack around the groove on the earpiece then insert the Shure foam any excess blutack would expand and can be easily removed. This ensures that the foams won’t ever detach from the earpiece even when wet after 6 months!
To remove and replace foam tips, get your nail and push it in the groove or into the blutack of the earpiece then pull from your fingernail. When remove foam from any iem never use excessive force as this may damage the sound tube.
I have showered, swam and worked out with these headphones and tip combination for 6 - 8 months. The only thing I’ve noticed is that the foam has now lost its compression time. So when you roll the foam it used to take 5 seconds to expand, now it’s more like 2.
I can supply pictures on request, good luck!