Hello Nevk

The most obvious solution will be the adjusting of the
Deflector Plate.

These plates are fitted to all reel mowers with a front catcher.
This plate [60] is adjustable by tabs [59]. Move the
deflector down (closer to the reel) to get the grass
into the catcher.

[Linked Image]

The reason reels have deflector plates is to accommodate
different grasses and the different characteristics between
dry and wet grasses.

Hope this helps
--------------------------------
Jack