[PyMOL] Increase sphere size for heavy element

Hi PyMOL users

If I display these coordinates

HETATM   38  C   LIG     2       1.535   2.288  -4.156  1.00  0.00           C
HETATM   39  C   LIG     2       2.284   1.535  -3.066  1.00  0.00           C
HETATM   40  O   LIG     2       3.406   2.362  -2.714  1.00  0.00           O
HETATM   41  C   LIG     2       1.426   1.234  -1.850  1.00  0.00           C
HETATM   42  S   LIG     2      -0.260   0.689  -2.100  1.00  0.00           S
HETATM   43  C   LIG     2       1.886   1.450  -0.593  1.00  0.00           C
HETATM   44  S   LIG     2       0.838   1.262   0.813  1.00  0.00           S
HETATM   45  C   LIG     2       3.318   1.872  -0.336  1.00  0.00           C
HETATM   46  C   LIG     2       4.139   1.803  -1.624  1.00  0.00           C
HETATM   47  W   LIG     2      -1.132  -0.004   0.041  1.00  0.00           W
HETATM   48  O   LIG     2       0.155  -1.665   0.118  1.00  0.00           O
HETATM   49  C   LIG     2       0.721  -3.870  -0.567  1.00  0.00           C
HETATM   50  C   LIG     2       0.384  -2.594  -0.826  1.00  0.00           C
HETATM   51  C   LIG     2      -5.606  -3.611  -1.000  1.00  0.00           C
HETATM   52  O   LIG     2      -6.664  -4.080  -0.564  1.00  0.00           O
HETATM   53  N   LIG     2      -4.607  -4.417  -1.426  1.00  0.00           N

using "Preset/Ball-and-stick", the tungsten atom is drawn with a very 
small radius. Can this radius be increased?

Thanks
Martin