Final configurations of models in the Standard Grid (top row) and Enhanced Grid (bottom row) for initial mass ratios q_i = 1.0, 0.9, 0.7. The colours indicate where overflow at the second Lagrangian point occurred at the zero-age-main-sequence or during evolution (purple and green respectively), where the difference between central and surface helium mass fraction exceeds 0.2 (red) and where homogeneous evolution occurs resulting in a double helium star (blue). Single hatched cells indicate that the system underwent contact on the main-sequence, and cross-hatched that contact occurred on the zero-age-main-sequence.