therealbobroberts.com has:
WG K7000 Flyback OEM $45.00
WG K7000 Flyback Replacement $19.00
WG K7000 Flyback Repair Kit $26.00
WG K7000 Horizontal width coil 009A2854-001 $12.50
WG K7000 Cap Kit $6.00
WG K7000 HOT 2SD1398 $5.00
WG K7000 Regulator IC4 STRxxxx most popular are:
19" chassis = STR3123 or STR30123
25" chassis = STR3130 or STR30130 $5.00
WG K7000 Retrace Cap (Critical Safety Cap C36) $6.00
WG K7000 Capacitor C38 .39uf 200v $5.00
WG K7000 IC1 UPC1397 $10.00
WG K7000 IC2 LA7823 $6.00
WG K7000 IC3 UPC1378 $11.00
WG K7000 R103 2.7 Ohm 7W Resistor $1.00
and here is a schematic (k7191):
http://jstookey.com/arcade/WG_25k7191/the ICs on the schematic are on the list of k7000 series parts available from bob