Been looking for a replacement trigger group for an M4. I see that Timney and Geissele are high reviewed but are currently our of my price range (what isn't these days?). What other recommendations are there? The gun runs perfectly with one exception...the trigger. Two words describe it...long and jerky. I could probably take the time to clean up the jerky portion but not the long travel feeling. It is not crisp at all. Thanks for any input.