please, much needed help with synchro deck

This is my synchro deck and i need help with it. its good but cant defend against powerhouses like 5
headed dragon.

Monstersx20
Junk synchronx3
quickdraw synchornx3
dandylion
level eaterx2
synchron explorerx2
quillbolt hedgehogx2
sangan
the calculator
debris dragon
cyber dragon
marauding captainx2
neospacian grand mole

Spells
monster reborn
mstx2
dark hole
magnet circle lv2
stray lambs
magical mallet
shrink
ROTA
pot of avarice
giant trunade
mind control
lightning vortex
double summon

Traps
sakuretsu armorx2
bottomlessx2
call of the haunted
torrential tribute

Extra deck
Junk warriorx2
junk destroyer
stardust dragon
dark end dragon
iron chain dragon
colossal fighter
road warrior

i was thinking about running a couple more dragon synchros and a draco knight equiste but i dont know.

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Deep Sea Diva x2
Plaguespreader Zombie
Glow up bulb

Just a few cards you should replace for off the top of my head, I'll post again when I get back to my house later tonight with a bigger list.

Dude no one has posted in this for nearly 3 months, this is called necroposting please try and not do it.

~Topic locked~ Since this is the first time you did it I wont raise your warning bar