Zendae
I think telling 250 is blocking xp for whole group is wrong assertion.
Just the mob is inadequate to the maximum level ability (here 250) used during the killing and/or the hunting party is too large.
You can hunt great kinchers in duo with a master, I'm sure you will still earn xp.
Btw, if a healing master is ready to offer his time, better to organize for him to be able to do it off-team ? You'll avoid the feeling of getting nowhere fast.
In case of healing it work fine, but what about if you want to power level a newbie with offensive?
You will deal enough damage to get the xp lock for yourself
Not to mention it isn't fun when your friends are all in team, and you need to get out of it (league? bleh) :)
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