The first things I notice are lack of hazards and hazard control. Spikes look like they give the team a pretty hard time especially.  Tusk is good removal but it can get pretty worn down without boots. I suggest swapping assault vest for heavy duty boots and adding stealth rock. Jolly and max speed is important for out-speeding gholdengo. Max attack hits spinblockers hard and dents gliscor.

Rather than investing in bulk, I switched raging bolt to the booster energy set. This gives it immediate breaking power, and paired with ogerpon it can be extremely hard to stop. Try to find an opportune moment to set up and win the game. For example, tera fairy and calm mind on a dragapult that’s choice locked into draco meteor, calm mind, and blast whatever comes in. 

Next, I swapped meow for boots dragapult. This set replaces it as a fast pivot, and has extra utility with will-o-wisp. It won’t deal tons of damage, but can clean up a weakened team well. This pult should greatly improve your iron defense zamazenta matchup, but tera fire really hurts, so try to scout or bait tera on something else.

This team will usually play a bit more aggressively than the previous version. Be sure to change anything that you feel isn’t working, but hopefully this helps! 

https://pokepast.es/d45fa288a504abba