SharePoint 2010 Workflow var limit

I have a long workflow ( much less than the 5mb limit ) which now fails to associate unless I delete out actions.  Adding a single action can cause it not to publish. I think I’ve run into the limit of 50 workflow variables but I’ve read differing accounts of this. I was able to create a 2010 WF on O365 with more than 50 variables including defining them and setting
 them but I’m on premise.  Any ideas on what the real limit is?    Splitting this workflow would be messy.  Help from farm admins is not available at all.
Environment SP 2013 but only 2010 workflows. No changes at central admin.  Full control only.
Keyboard CowboyAsked:
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Keyboard CowboyAuthor Commented:
I found a solution  - turns out it had over 100 workflow vars - I was able to get this down to about 85 and it publishes ok .  There's conversation on various about blogs about a 50 WF var limit but appears to be more than that.  At least over 100 breaks the association.  Question can be closed.

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Keyboard CowboyAuthor Commented:
Problem resolved
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